Custom App Development Services

Custom Mobile App Development Services for iOS & Android

Appy Pie is a trusted mobile app development company. Our expert app developers build native mobile app and cross-platform solutions from concept to launch — iOS app development, Android app development, React Native, Flutter. From startup MVP to enterprise scale.

10M+
Clients
9+
Years
4.8
Rating
150+
Countries
Why Appy Pie

Why Businesses Choose Appy Pie for Custom App Development

A proven mobile app development company with agile delivery, enterprise security and a unique no-code to custom pipeline that cuts app development timelines by 40%.

Trusted Mobile App Development Company

10M+ clients across 150+ countries. 99.9% uptime. Average 4.8-star rating. Featured by Forbes and TechCrunch as a top app development agency.

40% Faster App Development Timeline

Agile app development with two-week sprints, reusable component libraries and hybrid no-code + custom workflows cut your app development timeline dramatically vs traditional agencies.

Enterprise-Grade App Security

ISO 27001, SOC 2 Type II, HIPAA-ready, GDPR and PCI DSS certified. End-to-end encryption, penetration testing and code audits on every project.

No-Code to Custom App Pipeline

Start with Appy Pie’s no-code app builder for MVP validation at $16/month. Graduate to custom app development when you need proprietary logic and scale.

Hire Dedicated Mobile App Developers

Hire dedicated iOS app developers, Android developers, React Native or Flutter engineers. Full-time, part-time and project-based engagement models.

Post-Launch Mobile App Support

Bug fixes, OS update compatibility, performance monitoring, security patches, feature updates and analytics-driven optimization. Monthly retainer available.

Industries

Custom App Development for Every Industry

Domain-expert developers in healthcare, fintech, ecommerce, education, logistics and enterprise app development.

Startup MVP App Development

Validate your idea with a lean MVP app in 8-12 weeks. No-code prototype first, graduate to custom app development when traction confirms.

Enterprise App Development

Internal tools, workflow automation, employee portals, CRM integrations. Scalable architecture for thousands of concurrent users.

Healthcare App Development

Telemedicine, patient portals, EHR integration, appointment scheduling, prescription management. HIPAA-compliant architecture.

Fintech App Development

Banking apps, payment gateways, investment platforms, expense trackers. PCI DSS compliant, biometric auth, real-time transactions.

Ecommerce App Development

Product catalogs, cart, checkout, Stripe/PayPal, order tracking, loyalty programs. Connected to Shopify, WooCommerce or custom backend.

Education App Development

LMS platforms, course delivery, quizzes, certificates, student dashboards, video streaming. FERPA and COPPA compliant for K-12.

Mobile App Development Services

iOS, Android, React Native & Flutter App Development

Native and cross-platform mobile app development services with the tech stack that fits your product.

iOS App Development (Swift)

Native SwiftUI. App Store submission. iPhone, iPad, Apple Watch. Human Interface Guidelines compliant.

Android App Development (Kotlin)

Native Jetpack Compose. Google Play submission. Material Design 3. 10,000+ device configurations.

React Native Cross-Platform

One codebase for iOS + Android. 30-40% faster than separate native builds. Hot reload for rapid iteration.

Flutter App Development

Google’s UI toolkit. Single Dart codebase. High-performance rendering and custom widgets across platforms.

Web App & PWA Development

React, Next.js, Node.js. Progressive Web Apps, SPAs, dashboards. Responsive, fast, SEO-optimized.

Backend & API Development

REST and GraphQL APIs. Node.js, Python, Go. PostgreSQL, MongoDB. AWS, Google Cloud, Azure microservices.

App Development Process

Our App Development Process

Four phases, two-week agile sprints, continuous demos. You see progress every step.

Step 01

Discovery & Strategy

Market analysis, user personas, technical architecture, budget and app development timeline.

Step 02

Design & Prototyping

Pixel-perfect mobile app design, interactive wireframes, clickable prototypes for user testing.

Step 03

Development & QA

Agile sprints, automated testing, code reviews, security audits, CI/CD pipeline for full-stack app development.

Step 04

Launch & Growth

App store submission, ASO, analytics setup, performance monitoring and scalable mobile solutions.

Success Stories

Custom App Development Success Stories

Real businesses that chose Appy Pie’s dedicated app development team to build, launch and scale.

Healthcare · US

MediConnect Pro

  • HIPAA-compliant telemedicine app in 14 weeks
  • 12,000 patient consultations in first quarter
  • 99.97% uptime during peak surge
  • Integrated with Epic EHR and Stripe billing
Appy Pie’s team understood healthcare compliance from Day 1. We shipped faster than any mobile app development agency we interviewed.

— Dr. Patel, CTO

Fintech · UK

PayStream

  • Cross-platform payment app (React Native) in 16 weeks
  • PCI DSS Level 1 certified at launch
  • 50,000 transactions in month 1
  • Biometric auth + real-time fraud detection
We needed enterprise app development with PCI compliance from Day 1. Appy Pie delivered both ahead of schedule.

— James, Founder

Startup MVP · US

FitPulse

  • Fitness MVP app live in 10 weeks from concept
  • 5,200 installs in first month from organic
  • Series A raised with live product metrics
  • Migrated from no-code prototype to custom
We prototyped with no-code, proved traction, then graduated to custom mobile app development. Same partner, zero migration pain.

— Sarah, CEO

Comparison

Custom App Development vs No-Code vs Traditional Agency

75% of new apps use no-code or low-code. But 25-30% require rewrites within 2 years. Choose the right approach.

CriteriaAppy Pie CustomNo-Code (Appy Pie Builder)Traditional Agency
Time to Launch8-16 weeks (40% faster)Minutes to days6-12 months
App Development CostCompetitive · custom quote$16-$60/mo$50K-$300K+ (industry avg)
ScalabilityUnlimitedPlatform limitsUnlimited
Custom LogicFull controlTemplate-basedFull control
Tech StackSwift, Kotlin, React Native, FlutterAppy Pie engineVaries
Post-Launch App SupportIncludedSelf-serviceRetainer
Best ForScale-ready businessesMVPs & standard appsEnterprise with budget

Appy Pie offers both no-code ($16/mo) and custom app development. Start with no-code to validate, graduate to custom when ready.

Get Started

Get a Custom App Development Quote

Tell us your requirements. Get a tailored quote with app development timeline, tech stack and team structure within 24 hours.

MVP & Startup

Single platform, core features, lean validation for startup app development.

  • iOS or Android
  • Core features + prototype
  • App store submission
  • Post-launch app support
Get Free Quote

Full Custom

Cross-platform app development with complex integrations and backend APIs.

  • iOS + Android (React Native / Flutter)
  • Backend + API + admin dashboard
  • Complex integrations
  • Dedicated app development team
Schedule Consultation

Enterprise

Enterprise mobile app development with AI/ML, compliance and SLA.

  • All platforms + web
  • HIPAA / SOC 2 / GDPR
  • Dedicated team + PM
  • 12-month SLA
Talk to Sales
FAQ

Custom Mobile App Development FAQ

App development cost depends on scope, platform and complexity. Appy Pie offers competitive pricing across MVP, full custom and enterprise tiers and delivers 40% faster than industry average. Schedule a free consultation for a custom quote within 24 hours.
Cross-platform frameworks like React Native and Flutter share one codebase and cut development time by 30-40%. Native Swift for iOS and Kotlin for Android deliver maximum performance. Appy Pie recommends based on your requirements, budget and timeline.
MVP: 8-12 weeks. Mid-complexity cross-platform app: 3-6 months. Enterprise app: 6-12 months. Appy Pie delivers 40% faster through agile sprints and reusable component libraries.
Yes. Rapid MVP development for startups. Validate with real users in 8-12 weeks. Prototype with no-code first, migrate to custom when ready.
iOS: Swift/SwiftUI. Android: Kotlin/Jetpack Compose. Cross-platform: React Native/Flutter. Backend: Node.js, Python, Go. Database: PostgreSQL, MongoDB, Firebase. Cloud: AWS, Google Cloud, Azure.
Yes. Hire dedicated iOS app developers, Android developers, React Native or Flutter engineers. Full-time, part-time and project-based models. Managed by Appy Pie project leads.
Yes. ISO 27001, SOC 2 Type II, HIPAA-ready, GDPR and PCI DSS certified. Encryption, penetration testing and code audits on every enterprise project.
Healthcare app development, fintech app development, ecommerce app development, education, logistics, real estate, travel, SaaS platforms and enterprise internal tools.
No-code app builders generate apps from prompts at $16/month. Custom development builds from scratch with proprietary logic and unlimited scalability. Appy Pie offers both paths.
Yes. Bug fixes, OS updates, performance monitoring, security patches, feature updates and analytics-driven optimization. Monthly retainer or per-incident.

Ready to Build Your Custom App?

Free consultation. No commitment. Discuss your mobile app development project with our expert team.

About This Page & Custom App Development Platform

This page is maintained by the Appy Pie Custom Mobile App Development team, which includes experienced iOS and Android developers, React Native and Flutter engineers, UI/UX designers, project managers and QA engineers who work directly with startups, SMBs and enterprises building custom mobile applications.

Since 2016, over 10 million clients have used Appy Pie’s products across 150+ countries. The custom app development division specializes in native iOS (Swift), Android (Kotlin), cross-platform (React Native, Flutter), web app, backend API and enterprise integration projects across healthcare, fintech, ecommerce, education and on-demand verticals.

Service descriptions, process details and capability claims reflect the Appy Pie custom mobile app development platform as of April 2, 2026. Customer success stories use illustrative business names per our editorial policy — described workflows and results are based on actual project outcomes.

Appy Pie holds ISO 27001, ISO 22301, SOC 2 Type II, HIPAA-readiness, GDPR and PCI DSS certifications. Security audits are conducted quarterly by independent third parties. Comparison data (custom vs no-code vs traditional agency) is based on industry benchmarks from Clutch, Goodfirms and internal project data.

Appy Pie Custom Dev Team Last Updated: April 23, 2026 ISO 27001 · SOC 2 · HIPAA · GDPR

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